Register top plate.



REGISTER TOP PLATE.

(Application 'med .my 17, 1901.)

2 sneetssheei 2.

(No Model.)

UNiTnD STATES PATENT OFFICE.

` DNVIGHT G. CLARK, OF PLAINVILLE, CONNECTICUT.

REGISTER TOP PLATE;

SPECIFICATION forming part of Letters Patent No. 690,698, dated. January 7, 1902. l

Application tiled July 17, 1901. Serial No. 68,584. (No model.)

Tov all whom t may concern:

.Be it known that I, DWIGHT G. CLARK, a citizen of the United States, residing at Plainville, county of Hartford, State of Connecticut, haveinvented certain new and useful Inn'- provements in Register Top Plates, of which `the following is a full, clear, and exact description.

My invention relates to registers, ventilators, heaters, and the like; and it consists particularly in the construction of the top or face plate therefor.

Among the objects of my invention are simplicity, economy, eectiveness, and durability of construction.

My invention is illustrated in the accompanying drawings, in which-V Figure lis a plan view. Fig. 2 is a side elevation. Fig. 3 is a section taken on the line X X, Fig. 1. Fig. 4 is a plan view of a fragmentary portion of a top plate of modiied form.

Fig. 5 is a cross-section on the line Y Y, Fig.=

4. Fig. 6 is a cross-section on the line Z Z, Fig. 4.

In forming the top plate a piece of wrought metal is employed, the border of which may be ofany suitable outline.

A is the border, in the drawings shown to be of rectangular outline. vlVithin the border A is a perforated portion through which hotor cold air may pass. The perforations may be arranged in any desired form, the design of the drawings illustrating one preferred form. In forming a perforation incisions are made by two cutting edges, and the metal between said two cutting edges is forced downwardly, so as to span longitudinally each of said openings.

B B are the spans. .Each span is depressed, preferably, more than the thickness ofv the metal of the top plate, so that free passage for air is provided.

A perforated plate of the above kind and for theabove purpose may be made of light metal and at little cost, since all of the metal displaced in forming each passage may be employed to strengthen the main body, which might otherwise in the absence of the em- "ployment of the displaced metal to this useful end be so weakened as to be of no value. -4 This top plate may be used for registers or /ventilators or may be employed as a faceplate for electric heaters, covering and iinishing the Ventilating-passage through which the air flows.

In Figs. 4, 5, and 6 I have shown a modification in which the spans B are doubled or folded longitudinally, in which event the npper edgesof the spans may preferably lie in the plane of the upper surface of the top plate,

as shown in the sectional views, Figs. 5 and 6, in which it appears that the opposite edges of each span B are turned upwardly and together. One advantage of this modified construction is that the air-passages through the top plate are directly in the path of the current of air. Another advantage is that ad*- ditional strength is imparted to the finished structure.

. By the term depressed as used in the claims I mean offset-that is, if the spans in being formed are punched upwardly instead of downwardly they are, in the sense I mean, depressed, in that they are odset from the main body of the top plate. Clearly to elevate the span instead of to depress it would be the full equivalent of the latter method of construction.

1. A top plate for registers, ventilators and the like, said plate comprising, a'main body the central portion of the same being perforated, that portion of the metal between the opposite edges of each perforation being depressed and formedinto a span.

2. A top plate for registers, ventilators and the like, said plate comprising, a main body, a perforation therein, a span correspondin g substantially in outline to said opening,and connecting opposite ends of said opening, lsaid span being located below the lower` face of said body.

3. A top plate for registers,v ventilators and the like, said plate comprising, a main body portion, a perforation therein, a span extending from one end of said perforation to the other, the said spanning portion being folded so as to bring the opposite edges thereof toward each other.

Signed at Blainville, Connecticut, this 22d day of June, 1901.

DWIGHT G. CLARK.

Witnesses:

GEORGE D. CLARK, J. SANFORDv OORBAN.

IOO 

